Catalytic converters are devices that are commonly found in automobile exhaust systems to help reduce harmful emissions by converting them into less harmful substances. While many modern motorcycles do have catalytic converters to comply with emission regulations, some high-performance or sport-oriented models may not include them as they prioritize power and performance over emissions control.
It's important to note that regulations regarding emissions and catalytic converters can vary by country or region. So, it's possible that different versions of the Kawasaki Z900 RS, such as those sold in different countries or manufactured in different years, may have variations in their exhaust systems and emission control features. For the most accurate and up-to-date information, it is recommended to consult the manufacturer or a Kawasaki dealership.